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| Number | Title | Issue Date |
| 7351680 | High performance water-based mud system A drilling fluid or mud additive having several components, including leonardite (humic acid); potassium acetate; partially hydrolyzed polyacrylamide (PHPA); polyanionic cellulose polymer (PAC); sulfonated asphalt; sulfoalkylated tannin; polystyrene maleic anhydride... | 04/01/2008 |
| 7297662 | Method and composition for inhibiting lost circulation during well operation A method and drilling fluid additive composition are provided for reducing lost circulation and seepage loss when synthetic or oil based drilling fluid is used. The method includes injecting drilling fluid and 1 to 50 pounds per barrel of a loss control additive hav... | 11/20/2007 |
| 7288588 | Polymer binder for intumescent coatings The present invention discloses a copolymer composition for use in or as a polymeric binder in an intumescent coating, said copolymer composition comprising a blend of a Newtonian copolymer and of a reticulated copolymer, wherein the Newtonian copolymer is comprised... | 10/30/2007 |
| 7278485 | Method of formulating and using a drilling mud with fragile gels A method for drilling, running casing in, and/or cementing a borehole in a subterranean formation without significant loss of drilling fluid is disclosed, as well as compositions for use in such method. The method employs a drilling fluid comprising a fragile gel or... | 10/09/2007 |
| 7265078 | Drilling fluid apparatus and method Disclosed are drilling fluids suitable for use in connection with oil well drilling. The drilling fluids of the invention include in one embodiment a liquid base, an alkyl glucoside, such as methyl glucoside, and a borehole stability promoter that includes a maltode... | 09/04/2007 |
| 7256159 | Fluid loss reducer for high temperature high pressure water based-mud application The present invention concerns a water-based drilling mud for utilization in the drilling of oil wells comprising an aqueous phase wherein the aqueous phase contains an oil soluble polymer in the form of a gel as a fluid loss reducer. The subject invention further r... | 08/14/2007 |
| 7247604 | Oil-based drilling fluid comprising a temperature-stable and non-polluting emulsifying system A temperature-stable, non eco-toxic oil-base well fluid that is particularly suitable for high pressure/high temperature drilling comprises an emulsification system comprising at least one superamide that may or may not be polyalkoxylated, optionally associated with... | 07/24/2007 |
| 7198805 | Method for producing humic acid salts Humic acid salts are produced, with a high output of useful products, by a liquid-phase oxidation of the mixture of an alkaline agent with a lignin-containing plant raw material having the total content of dry substances of 12–20 %, said oxidation being carried ou... | 04/03/2007 |
| 7147067 | Zeolite-containing drilling fluids Methods and compositions for wellbore treating fluids, especially drilling fluids, that comprise zeolite and a carrier fluid. ... | 12/12/2006 |
| 7140439 | Zeolite-containing remedial compositions Methods and compositions for wellbore treating fluids, especially remedial compositions such as pills, that include zeolite and at least one carrier fluid. ... | 11/28/2006 |
| 7101829 | Fluid loss reducer for high temperature and high pressure water-based mud application The present invention concerns a water-based drilling mud for utilization in the drilling of oil wells comprising an aqueous phase wherein the aqueous phase contains an oil soluble polymer in the form of a gel as fluid loss reducer. The subject invention further rev... | 09/05/2006 |
| 7091159 | Compositions for and methods of stabilizing subterranean formations containing clays A composition of matter for use in stablizing shale formations in earth boreholes comprising polymeric products, e.g., polymers of a dialkyl aminoalkyl methacrylate, which can optionally be quaternized with an alkyl halide to produce drilling fluid additives which s... | 08/15/2006 |
| 7067155 | Anti-inflammatory humate compositions and methods of use thereof The invention relates to an anti-inflammatory composition containing humate, such as insoluble, granular, other insoluble, or soluble humate, particularly Menefee Humate®. The invention also includes other anti-inflammatory compositions containing humate and at lea... | 06/27/2006 |
| 7067004 | Grout compositions having high thermal conductivities and methods of using the same Grout slurries are provided that have high thermal conductivities of greater than about 1.4 Btu/hr-ft-° F. and low hydraulic conductivities ranging from about 5×10−9 cm/s to about 1×10−8 cm/s. Such grout slurries comprise water and a grout composition that is... | 06/27/2006 |
| 7060660 | Drilling fluid additive system containing talc and graphite A drilling fluid additive system is provided wherein the system comprises: a drilling fluid additive comprising talc, graphite and at least one carrier such as a glycol; and hydrophilic clay, a pH controller, a fluid loss controller, and at least one dispersant.... | 06/13/2006 |
| 7056867 | Drilling fluid additive system containing graphite and carrier A drilling fluid additive system is provided wherein the system is manufactured by a method comprised of admixing graphite with at least one carrier such as a polypropylene glycol or oil to create a suspended mixture, and allowing the surface of the graphite to be p... | 06/06/2006 |
| 7048053 | Zeolite compositions having enhanced compressive strength Zeolite compositions having enhanced compressive strength and methods therefor are provided. In particular, methods and compositions for wellbore treating fluids, especially settable spotting fluids having enhanced compressive strength are provided. ... | 05/23/2006 |
| 6968898 | System and method for removing particles from a well bore penetrating a possible producing formation A system and method for removing particles from a well bore penetrating a possible hydrocarbon producing formation, according to which drilling fluid is mixed with a weighted material, and the mixture is introduced into a well bore so that the mixture scours any par... | 11/29/2005 |
| 6887832 | Method of formulating and using a drilling mud with fragile gels A method for drilling, running casing in, and/or cementing a borehole in a subterranean formation without significant loss of drilling fluid is disclosed, as well as compositions for use in such method. The method employs a drilling fluid comprising a fragile gel or... | 05/03/2005 |
| 6825152 | Method for creating dense drilling fluid additive and composition therefor A dense drilling fluid additive used to control lost circulation, fluid loss and/or seepage loss of drilling fluid during drilling operations is disclosed. Such additive is formed from ground base materials, such as inorganic matter, and may be used to manage the rh... | 11/30/2004 |
| 6818596 | Dry mix for water based drilling fluid A drilling fluid or mud having several components, including leonardite (humic acid); potassium acetate; partially hydrolyzed polyacrylamide (PHPA); polyanionic cellulose polymer (PAC); sulfonated asphalt; sulfoalkylated tannin; polystyrene maleic anhydride copolyme... | 11/16/2004 |
| 6806232 | Composition of drilling fluids comprising ground elastomeric crumb rubber material and a method of decreasing seepage and whole mud loss using such composition Well-working fluid compositions containing certain processed inorganic, oil and water wettable ground elastomeric crumb rubber materials to decrease the seepage loss of various fluids to subterranean formations in which these well working fluids are required and uti... | 10/19/2004 |
| 6737384 | Drilling fluid additive system containing talc and cellulose A drilling fluid additive system is provided wherein the system is manufactured by a method comprised of admixing colloidal solids such as talc with a carrier such as oils and glycols or talc with cellulose to create a suspended mixture to thereby allow the colloida... | 05/18/2004 |
| 6734145 | Drilling fluid additive system containing talc & carrier A drilling fluid additive system is provided wherein the system is manufactured by a method comprised of admixing colloidal solids such as talc with a carrier such as oils or glycols to create a suspended mixture to thereby allow the colloidal solids to be pre-wet o... | 05/11/2004 |
| 6514916 | Process for making sulfonated uintaite and well fluid additives including sulfonated uintaite Sulfonated uintaite is prepared by sulfonating a naturally occurring uintaite charge with a sulfonating agent such as sulfur trioxide, fuming sulfuric acid, chlorosulfonic acid, oleum, or concentrated sulfuric acid to produce sulfonic acids of uintaite. T... | 02/04/2003 |
| 6395686 | High pressure, high temperature (HPHT) fluid loss control aid for drilling fluids The invention relates to a composition comprising an HPHT fluid loss control aid, stable at elevated temperatures and which also acts as an excellent shale stabilizer, bore hold lubricant, sealant for depleted sand, and wall cake conditioner. The HPHT flu... | 05/28/2002 |
| 6258756 | Salt water drilling mud and method A salt water drilling mud comprising a mixture salt water, a solid phase such as pre-hydrated bentonite, attapulgite, sepiolite, and extended bentonite, among others and optionally a synthetic oil, which is mixed with at least one of five different module... | 07/10/2001 |
| 5942467 | Drilling fluid system containing a combination of hydrophilic carbon black/asphaltite and a refined fish oil/glycol mixture and related methods A drilling fluid system that combines a carbon black/asphaltite/lignite mixture with a fish oil/glycol mixture; and a method for manufacturing a drilling fluid system that could be utilized with pre-existing water based muds during drilling and excavating... | 08/24/1999 |
| 5843872 | Drilling fluid system and related methods A drilling fluid system that combines a carbon black/asphaltite/lignite mixture with a fish oil/glycol mixture; and a method for manufacturing a drilling fluid system that could be utilized with pre-existing water based muds during drilling and excavating... | 12/01/1998 |
| 5646092 | Pretreated clays, their preparation and use in formulation drilling muds not aggressive to layer clays Disclosed is a process for preparing aqueous, clay-based muds, not aggressive to layer clays, which process comprises a first step in which clay is treated with an aqueous solution containing the necessary amount of dispersant to fluidify the mud; a secon... | 07/08/1997 |
| 5399548 | Blended drilling fluid thinner A blended additive composition, which is useful for thinning aqueous drilling fluids, is disclosed. The composition includes a first component selected from the group including: a modified tannin, a modified lignite and sodium lignosulfonate; a second com... | 03/21/1995 |
| 5149370 | Well cement compositions having improved properties and methods Cement compositions which have improved properties such as increased stability, reduced settling tendencies, enhanced fluid loss properties and the like and methods of using such cement compositions are provided. The cement compositions are comprised of w... | 09/22/1992 |
| 5114597 | Method of making a drilling fluid containing carbon black in a dispersed state A process for the manufacture of a water based drilling fluid additive comprising the steps of: (a) mixing hydrophobic carbon black and either a surfactant or a dispersant and (b) shearing the mixture of step (a) under a sufficiently high mechanical shear... | 05/19/1992 |
| 5114598 | Method of making drilling fluid containing asphaltite in a dispersed state A process for the manufacture of a water based drilling fluid additive comprising the steps of: (a) premixing hydrophobic asphaltite and either a surfactant or a dispersant and (b) shearing the mixture of step (a) under a sufficiently high mechanical shea... | 05/19/1992 |
| 5032296 | Well treating fluids and additives therefor An additive for reducing the water loss and improving other properties of well treating fluids in high temperature subterranean environments and well treating fluids including the additive are provided. The additive comprises a mixture of a water soluble ... | 07/16/1991 |
| 5030365 | Water-wettable drilling mud additives containing uintaite A water-based drilling mud additive comprising a pre-blended combination of about 2 parts of high softening point uintaite, about 1 part of a lower softening point uintaite, about 1 part of causticized lignite, and a strongly lipophilic, non-ionic surfact... | 07/09/1991 |
| 4941983 | Fluid loss-reducing additives for oil-based well working fluids A fluid loss additive for oil-based well-working fluids, the fluid loss additive comprising the product of mixing in an oil or oil based liquid, (i) lignite or humic acid (ii) (a) an oil soluble or oil dispersible amine or amine salt; (b) an aliphatic amide or hydr... | 07/17/1990 |
| 4938803 | Vinyl grafted lignite fluid loss additives A vinyl grafted lignite fluid loss additive comprising a lignite grafted with at least one vinyl monomer selected from the group consisting of: dimethylaminopropyl methacrylamide, methacrylamido propyltrimethyl ammonium chloride, N-vinylformamide, N-vinyl... | 07/03/1990 |
| 4921620 | Chrome humates as drilling mud additives The disclosure is of the use of chrome humate derivatives to reduce the viscosity of and/or to prevent fluid loss in water-based drilling fluids. The composition is much more effective as a drilling mud thinner, and as a fluid loss control agent than the ... | 05/01/1990 |
| 4889645 | Substituted-ammonium humate fluid loss control agents for oil-based drilling muds The disclosure is of particular substituted ammonium humates useful as fluid loss control agents in oil-based drilling fluids. The humate bears a unique compositional make-up.... | 12/26/1989 |
